Hi guys! I have 2 SD cards for my M3 cart and last week I turned it off after playing a game only to turn it straight back on again. When I did i got a message "Couldn't find_DS_MENU.DAT". When putting my SD card in the pc it is showing that there is still something on the card using memory but It cant see the games or files! My other SD cart works fine still so I am wondering, is it something I did, can my games be retrieved or do I need to reformat and start again? I'm dreading losing 3 months of Animal Crossing so any help truly appreciated! Thanks guys xx